The Market LogEnter at least 2 characters. Company and ticker searches are not case-sensitive.

Reporting owner

Shaff Eric D.

Reporting owner CIK 0001643734 · Director

View SEC filings ↗

These transactions appear in filings associated with this reporting owner. Jointly reported quantities and amounts are unallocated; they are not this owner's individual purchases or total holdings. Names and roles reflect the relevant filing, and a reporting owner may be a person or an organization.

Reset

Transaction timeline

Who reported an acquisition, and when the transaction occurred.

Reported acquisitions by transaction dateEach row is a reporting owner. Select a marker to open its transaction details. Jointly reported transactions appear for each associated reporting owner, without dividing quantities or amounts.Shaff Eric D.Shaff Eric D.Shaff Eric D. · November 15, 2025 · Exercise / conversion · Common StockShaff Eric D. · November 15, 2025 · Exercise / conversion · Common StockNov 15, 2025Nov 15, 2025
PurchaseStock awardGift receivedExercise / conversionConversionOther acquisition

2 dated transactions · 1 of 1 reporting owners shown. Select one owner to focus the chart.

View timeline as a table
Transaction dateCompany / securityReporting ownersAcquisition type
Nov 15, 2025Seres Therapeutics, Inc.Common StockShaff Eric D.Exercise / conversion
Nov 15, 2025Seres Therapeutics, Inc.Common StockShaff Eric D.Exercise / conversion

Only transactions on this page are shown. Date windows end on the latest transaction date in this sample. Joint filings may appear on more than one row. Sales are not included. Share-price charts use a separate data source.

Transactions in associated filings

Reported insider acquisitions, ordered by filing date, newest first. Currency is shown only when reported.
Filed / transactedCompanyReporting ownersType / securityQuantityPrice / reference valueDetails
Trade: Seres Therapeutics, Inc.MCRB · company listingsExercise / conversionCommon StockNon-derivative security · Code M331Not reported *Value: Not reportedCurrency not specifiedView ↗
Trade: Seres Therapeutics, Inc.MCRB · company listingsExercise / conversionCommon StockNon-derivative security · Code M390Not reported *Value: Not reportedCurrency not specifiedView ↗